Spartan Tool 740 Water Jet, Owner'S Manual

Page: 23 / 70

Page 23
Operating Instructions (cont.)
Operating Hints:
The following techniques can be tried if the going gets slow.
— Grab the hose into an “S” shape and twist the hose to help it get around corners and off of pipe
edges. (See Fig. 7 page 24.)
— Turn water valve off and pull hose back out of line. Look for traces of clay or other material
to determine if nozzle is burying itself outside of pipe.
— Try different nozzle or different pipe openings.
— Walk to nearby buildings and manholes and listen for water sound to determine if hose is
going where it should. The hose may tie itself up in a manhole and need help going into the
next pipe. Use a pole or pipe to guide hose so entering the manhole can be avoided.
Pipe Jetting Procedure
Equipment:
Although the Model 740 is capable of various high pressure cleaning operations, jetting pipes of 4” - 12”
is typically the major work required of the jet. The hose reel is designed for outdoor applications. See
sections on the mobile hose reel and 1/4” drain hose for indoor or remote applications and for lines
smaller than 6”.
For safety reasons, always operate with 2 people when the pipe entrance is away from the jet location;
one person should stay near the jet to control the machine operation while the other person works the
hose and nozzle. The mobile hose reel should be used for remote control whenever the second person
cannot be seen or heard by the machine operator.
The sewer hose should always be replaced when cord reinforcement can be seen because of a worn
cover.
The Model 740 nozzles are designed to match the pressure and flow performance of your jet. They are
key to efficient operation because they convert all of the engine and pump power to water speed for hose
pull and for cleaning impact.
Nozzles “758 Closed ” (75800800) and “758 Open ” (75800900) are standard equipment. See parts
section for part numbers to order additional nozzles or root cutters. Nozzle holes will wear after several
months of continuous use. If the system operating pressure gradually drops, try a new nozzle to check for
wear. Check for nozzle plugging occasionally by removing the nozzle from the hose and holding up to the
light. Clean by inserting small diameter wire if necessary. Plugged nozzles will cause poor hose pull even
though the gauge pressure will show higher.
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